<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>09_绝对定位</title>
    <style>
        .fu{
            background-color: #ff0;
            position: relative;
            width: 500px;
        }
        .fu>div{
            width: 100px;
            height: 100px;
        }
        .z1{background-color: #f00}
        .z2{
            background-color: #0f0;
            /*绝对定位:会脱离文档流,释放布局空间
            移动参照物:离自己最近的,有非静态定位属性上的上层元素,终点是html*/
            position: absolute;
            top: 0;
            right: 0;
        }
        .z3{background-color: #00f}
    </style>
</head>
<body>
    <div class="fu">
        <div class="z1"></div>
        <div class="z2"></div>
        <div class="z3"></div>
    </div>
</body>
</html>